A Bitcoin clone that has reached success through clever marketing. Over the past year well over a hundred new cryptocurrencies have been created but not many have instantly carved out a niche. Dogecoin has sponsored multiple high profile events such as Nascar teams and the winter olympics - even so there are few locations to use the coin - and instead it has become a de facto internet tipping currency. The coin has produced 100 billion units by the end of 2014 and is now producing roughly 5 billion units per year.